How do you increase the horsepower on a 2006 Dodge Magnum xtr?

To increase the horsepower on a 2006 Dodge Magnum XTR, consider upgrading the air intake system for better airflow, installing a high-performance exhaust system to reduce back pressure, and using a performance tuner to optimize the engine's ECU settings. Additionally, you might explore options like a high-performance camshaft or supercharger for a more significant boost in power. Regular maintenance, such as ensuring the spark plugs and fuel injectors are in good condition, will also help the engine perform at its best.